Antiskid device.



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; Patented Jan'. 14, 1919.

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ATTonN'EY am mais, ma, uma.. wnmumw o We, Tramitar A.' 'E1-Non:-

es, residing at Stanton, inthe count pfmMontcalm and State ofMichigan,"

'hav l tedfcrtain'new anduse'fnl Impro` n *ntiskid Devices, of which thes "eciiication Y Pl'. previitingth'e @and also to lins l meritibetvve'en the" drive Wheels andthe surface, therebyprifiiting theslipping or the ding of motor 'vehicles spinning'ofc tliedrive WheelsWhen the en gine isexpending ipower for propelling the vehicle. f

The invention has for its object to provide means which are positivelin` action `for both purposes-and which may be readily-applied toore-disconnected from the Wheels as occasion may require i A. furtherpurpose of the invention is the provision of means Iwhich admits of theready replacement of disabled parts Vand which replacements may beeconomicallyT and quickly made.`

The invention also has for its object the provision ofiseparate andindependent traction elements and side members, the `parts so'fbeing ofsuch formation as to hold the traction elements in'relative givenposition While l at the same time admitting of any one of the elementsbeing readily replaced..

The dra-Wing illustrates a preferred' emn 3'5 bodiment of the invention.`However, it is' to begunderstood that in adapting the same to meetdifferent conditions, various changes in the form, proportion,- andminor details of construction may be lresorted to Without de- 40 partingfrom the nature of the invention as claimed hereinafter.

Figure l is a side view of a portion of a traction and antiskid deviceembodying the invention. v. y Fig. 2 is a transverse section'on the 'lme2--2 of Fig. 1. v Fig. 3 is a the traction elements.

Corresponding and like parts are,reiferred` to in the 'followingdescription and indicated in the several views of the drawings by like,reference characters. p i l The device comprises 4like side members Aand traction elements B.

u l l formation, the several links being coupled 1n l'y-:Pnciinsr aimsnivrunii Damian, or savana-on, i V.anfrnsnrnlrmvfrenr. i l l iSpecification `of Letters Patent. Appiiatipn anali/ray 6,1318.`seria;ini..232,574.

i l Y any manner to admit offld l). HURD, citizens' of the of each ofthe side members are eonnetedbyf ion relates to means 'for vmeans of aturn bueklefltthe' termina niks ositive tractive engagey `offsetportions 4 of the links.

diagrammatic view of one of 5' of each of thetractor elements and ispref- `erably fastened thereto by means of rivets Each of the sidemembers is of chain like est bers When' disconnected 'fr motorvehicle'so as to amount of space. Eacl A is of a lengthl corrspo lingprbxi mately with the circumferr ce off/th `vvhe'e rd'ed andltheends 1for which the deviceis iii being `threaded as' indica the threaded endsoffi'lil t preferably constructedof h proper gage to Withstandftheseveral links'with the exception-Lof;tlielterea minal links, are of likeformation, the terminal links differing only in that their coupling endsare made straight and threaded as indicated at 2 to coact 'with`the turnbuckle 1. Theconstruction is such as to result 4in the provision of aside member havl ing a degree of resiliency in theY direction of thelength of the member and Vthis has been found to be of advantage. Thisisdue to the yThe traction elements are of like formal tion and each isconstructed of a strip of sheet metal of a length to extend across thetreadportion of the tire and along the sides thereof,` a distance tomake engagement with the sid'elmembers A. The middle portion of theplateis of uniform Width as indicated at 5, Whereas the end portions 6 aremade tapering and terminate in eyes 7 which 'are adapted to engageftheoffset portions 4 of the side members A. The tractor elements are curvedin their length so as to conform to the transverse curvature of theouter face of the tire, as indicated most clearly in Fig. 2. Theengagingends 7 connect opposed off" set portions 4- of the side membersA, there v'by holding the parts in given position.

Asecond plate 8 is secured to the middle lo; 9 which also assistmaterially in resisting Wea-r and preventing slipping. Opposite edges ofthe plate 8 are bent at a right angle tires.

'angle to provide Hanges 11 which extend transversely of the tread ofthe wheel and 4 prevent slipping. The flanges 10 and 11 act rinthecapacity of calks or tractor lugs toA insure positive 'engagementbetween the traction element and the Surface over which the vprovided onthe different types of trucks and Iitiotor' vehicles for hauling heavyloads.

Thisiwill entaildifferent forms of the de- .v vice to adapt the same tothe different styles of tires and wheelsbut such changes are l Withinthe scope-'of the invention as de ed in the subject matter hereinafterclaimed. 'The device is placed in position in substantially the samemanner as the4 ordinary tire chain and the ends of the side l membersare connected by means of the turn buckles, the latter serving t o drawthe side members close about the tires.

y The foregoing description and the drawings have reference to what masidered the preferred, or" approve form of be conour invention. It is tobe understood that we may make such changes in construction andarrangement and combination of parts, materials, dimensions, et cetera,as may prove expedient and fall within the scope of the appended claims.

Having thus fully described our invention, what we claim as new anddesire to secure by Letters Patent, is:-

1. A device of the character s ecified comprising side members, rovidewith regularly spaced transverse y alined offset portions and tractionelements having their ends A engaging the oset portions .of the sidemembers.

A device of the character specified, comprising side members, eachcomprising connected links and` having each of the linksy formed with anoii'set portion, and traction elements having their ends en aging theoset portions of the 'side mem ers.

In testimony whereof we aix our signatures 1n presence of two witnesses.

` WILLIAM A. PINCKNEY.

SAMUEL D. HURD.

Witnesses: ALFRED L. STEARNS, 4Manon BLUMBERG.

